Version 2 release (#685)

* Update README for v2

* Remove codeql analysis

* Version bump checkout action

* Tweak closed issue message

* Changes for v2 release

* Adjust action name

* Update CHANGELOG

* Update action to use node 16

* Update versions

* Typo

.mergify.yml

@@ -7,7 +7,7 @@ queue_rules:
 pull_request_rules:
   - name: Automatically merge on CI success and review approval
     conditions:
-      - base~=master|v1-node16|integ-tests
+      - base~=master|integ-tests
       - "#approved-reviews-by>=1"
       - -approved-reviews-by~=author
       - status-success=Run Unit Tests
@@ -23,7 +23,7 @@ pull_request_rules:
 
   - name: Automatically approve and merge Dependabot PRs
     conditions:
-      - base~=master|v1-node16
+      - base~=master
       - author=dependabot[bot]
       - status-success=Run Unit Tests
       - -title~=(WIP|wip)